72090890

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{81001}}^1$

素因数の和:81097

約数の個数: 16

約数和(自身を含む): 131223240

約数和(自身を除く): 59132350

約数列:

[1, 2, 5, 10, 89, 178, 445, 890, 81001, 162002, 405005, 810010, 7209089, 14418178, 36045445, 72090890]

約数ペア:

[(1, 72090890), (2, 36045445), (5, 14418178), (10, 7209089), (89, 810010), (178, 405005), (445, 162002), (890, 81001)]